In the name of the Sennheiser, the AKG and the Holy Beyerdynamic - The Holy Trinity : r/headphones
AKG K240 Monitor 600 ohm Over-Ear Studio Headphones Made in Austria | eBay
Just got these 600 ohm AKG240s for $20 : r/headphones
Headphones Comparison: Sennheiser HD 600 vs. AKG K702 - 3D Insider
Sennheiser HD 600 vs AKG K702 Side-by-Side Headphones Comparison - RTINGS.com
Vintage AKG K 240 Monitor K240M headphones 600 ohm Austria | Reverb
OEM InEar Earbuds Stereo Headphones for HTC Desire 600 dual sim Plus Cable - Designed by AKG - with Microphone and Volume Buttons (Black) - Walmart.com